Commit 71d63782 authored by Christian König's avatar Christian König
Browse files

dma-buf: finally make dma_resv_excl_fence private v2 



Drivers should never touch this directly.

v2: fix rebase clash

Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220321135856.1331-10-christian.koenig@amd.com


Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 756cc94d

drivers/dma-buf/dma-resv.c

+6 −0
Original line number Diff line number Diff line
@@ -140,6 +140,12 @@ void dma_resv_fini(struct dma_resv *obj) 
}

EXPORT_SYMBOL(dma_resv_fini);



static inline struct dma_fence *

dma_resv_excl_fence(struct dma_resv *obj)

{

       return rcu_dereference_check(obj->fence_excl, dma_resv_held(obj));

}



static inline struct dma_resv_list *dma_resv_shared_list(struct dma_resv *obj)

{

	return rcu_dereference_check(obj->fence, dma_resv_held(obj));

include/linux/dma-resv.h

+0 −17
Original line number Diff line number Diff line
@@ -411,23 +411,6 @@ static inline void dma_resv_unlock(struct dma_resv *obj) 
	ww_mutex_unlock(&obj->lock);

}



/**

 * dma_resv_excl_fence - return the object's exclusive fence

 * @obj: the reservation object

 *

 * Returns the exclusive fence (if any). Caller must either hold the objects

 * through dma_resv_lock() or the RCU read side lock through rcu_read_lock(),

 * or one of the variants of each

 *

 * RETURNS

 * The exclusive fence or NULL

 */

static inline struct dma_fence *

dma_resv_excl_fence(struct dma_resv *obj)

{

	return rcu_dereference_check(obj->fence_excl, dma_resv_held(obj));

}



void dma_resv_init(struct dma_resv *obj);

void dma_resv_fini(struct dma_resv *obj);

int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences);